CATALYST AND METHOD OF PREPARING A CATALYST FOR HYDROTREATING HEAVY OIL FRACTIONS WITH HIGH HYDRODESULPHURISATION AND HYDRODENITROGENATION ACTIVITY Russian patent published in 2024 - IPC B01J21/12 B01J21/02 B01J23/88 B01J31/22 B01J27/18 B01J27/04 B01J37/02 B01J37/20 C10G45/08 

FIELD: oil refining.

SUBSTANCE: invention relates to oil refining, particularly, to hydrotreatment of heavy oil fractions with high content of nitrogen-containing organic compounds. Described is a catalyst and a method of preparing the catalyst, which includes compounds of molybdenum, nickel, phosphorus and a support. Catalyst is prepared by impregnation of support by moisture capacity with aqueous solution simultaneously containing a mixture of complex compounds [Ni(H₂O)₂]₂[Mo₄O₁₁(C₆H₅O₇)₂], Ni₂[H₂P₂Mo₅O₂₃] and H₄[Mo₄(C₆H₅O₇)₂O₁₁] and diethylene glycol in amount of 10-20 vol.%, impregnation is carried out at temperature of 60 °C for 15-30 minutes with periodic mixing with subsequent drying and sulphidation, wherein the support is used, which contains, wt.%: in terms of oxides of non-metals SiO₂ – 2 and B₂O₃ – 10; sodium – 0.03; γ- and χ-Al₂O₃ – balance. After impregnation and drying catalyst contains, wt.%: [Ni(H₂O)₂]₂[Mo₄O₁₁(C₆H₅O₇)₂] – 1.5-7.0; Ni₂[H₂P₂Mo₅O₂₃] – 22.5-30.0; H₄[Mo₄(C₆H₅O₇)₂O₁₁] – 3.2-6.8; carrier – the rest. Particles of the active component formed after the sulphidation step have dispersity of 0.34-0.39.

EFFECT: high hydrodesulphurisation and hydrodenitrogenation activity during hydrotreatment of heavy oil fractions.

2 cl, 1 tbl, 5 ex